Jewelled point pen



Sept. 29, 1959 YOSHIMITSU ISHIDA JEWELLED POINT PEN Filed Dec. 25, 1957 United States Patent O JEWELLED POINT PEN Yoshimitsu Ishida, Kanazawa-ku-Yokohama-shi, Japan Application December 23, 1957, Serial No. 704,371

2 Claims. (Cl. 1Z0- 112) This invention relates to improvements in pens having jewelled writing points.

One object of this invention is to provide a pen of ystronger structural design than those of conventional pens.

Another object of this invention is to provide a pen which has smooth writing qualities.

Still another object of this invention is to provide a pen which is attractive from an ornamental and decorative point of view.

A further object of this invention is to provide la pen which is not corroded by ink without requiring the p-rovision of a special tip of a metal such as iridium.

A still further object of this invention is to provide a pen with which an extremely thin line may be drawn.

The invention will be better understood and other objects and Iadditional advantages of the invention will become apparent upon perusal of the following descrip tion taken in connection with the drawings, and the scope of the invention will be defined in ythe appended claims.

In the drawings,

Figure l s a fragmentary axial vertical sectional view of a pen embodying this invention;

Figure 2 is a plan view of a nib-supporting member of the pen;

Figure 3 is a plan view of a left-hand piece of the nib;

Figure 4 is a lateral vertical cross-sectional View of said piece taken on the line 4 4 of Figure 3;

Figure 5 is a plan of a right-hand piece of the nib;

Figure 6 4is a lateral vertical crosssectional view of said right-hand piece taken on the line 6-6 of Figure 5;

Figure 7 is a plan of the two pieces arranged abreast with each other; and

Figure 8 is a lateral vertical cross-sectional view of the pen taken on `the line 8 8 of Figure 1.

Similar numerals refer to similar parts throughout the severa-l views.

Referring more particularly to the drawings, the preferred embodiment of this invention will now be described; however, this description will be understood to be illustrative of the invention and not as limiting it to the particular structure shown and described.

The nib supporting member 1 has a general bulletsh-aped configuration with a flat upper surface (as seen in Fig. l) in which is provided the recess 2. The recess has a trapezoidal horizontal configuration as shown in Fig. 2. Mounted within the recess 2 is the rib 3 (Fig. 7) which consists of two jewel nib parts 3', 3". As shown in Figs. 3 and 5, each nib part has a flat bottom surface adapted to rest upon the bottom surface of the recess 2, a flat vertical side surface adapted to contiguously engage the corresponding side surface of the other nib part, and a curved outer Wall. The flat vertical wall `and the curved outer wall of each nib converge and 2,906,243 Patented Sept. 29, 1959 ICC terminate in a uted writing tip. At the point of junction of the vertical flat wall and the bottom flat wall the nib parts are provided with the bevelled surface 5 (see Figs. 4 and 6). As shown in Figs. 3, 5 and 7 the bevelled surfaces 5 terminate adjacent the writing tips of the nib parts. When lthe nib parts are assembled, the bevelled surfaces define a longitudinal channel 4 adjacent the bottom of recess 2` into which is inserted the ink guiding member 6. As shown in Fig. 6, one end of the ink guiding member is mounted within the rear wall of the nib supporting recess 2. A centrally located longitudinal groove 7 is provided in the upper and bottom surfaces of the nib-supporting member 1 in order to feed ink therethrough. The cover member 8 is positioned with its fiat lower surface contiguous lwith the upper fiat surface of the member 1 and extends forwardly over the nib 3 to retain the nib parts within the groove Z. The tnapezoidal configuration of the nib (Fig. 7) cooperates with the recess -2 to prevent longitudinal movement of the nib parts 3', 3" relative to the member '1.

By virtue of the above structure, ink supplied through the groove 7 is made to flow towards the tip at a suitable rate.

While a particular embodiment of the invention has been illustrated and described, modifications thereof will readily occur to those skilled in the art. It should be understood therefore that the invention is not limited to the particular arrangement disclosed but that the appended claims are intended to cover all modifications which do not depart from the true spirit and scope of the invention.

I claim:

1. A writing pen comprising a horizontal nib-supporting member having an end portion of generally bulletshaped configuration, said end portion having a flat upper surface with an open-ended recess therein at the extremity of said end portion, said recess having a substantially trapezoidal `configuration when viewed from the horizontal plane and having a dat bottom surface, the minor end of the trapezoid being adjacent said end portion, a

nib mounted in said recess, said nib having a trapezoidal.

configuration when viewed in the horizontal plane and having a writing point extending axially from the end of said nib-supporting member, said nib consisting of -two nib jewel pants each having longitudinal contiguous fiat vertical side surfaces and at bottom surfaces in contiguous engagement with the fiat bottom of the recess, each of said nib parts having bevelled surfaces intermediate said vertical and horizontal fiat surfaces which mutually define a longitudinal channel in said nib adjacent the bottom of said recess, an ink guiding member within said channel, one end of said ink guiding member being secured to the rear wall of the recess of said nib-supporting member, and a cover secured to the flat upper surface of said nib supporting member, said cover partially extending over the end of said nib to retain the nib parts within said recess.

2. A writing -pen as defined in claim l and further wherein the upper and lower surfaces of said nib-supporting member have a longitudinal ink-carrying `groove in communication with said recess.

References Cited in the file of this patent UNITED STATES PATENTS 272,066 Lewis Feb. 13, 1883 1,686,377 Hanson Oct. 2, 1928 1,875,967 Weddell Sept. 6, 1932 2,127,998 Jearum Aug. 23, 1938 

